I'm pretty sure Kevin dumped Maniac (from Ideal); he's got a file on his site that has the same code number that was on the chip I decapped. My game had the PIC1655A version and I was unable to dump it, and I cracked the die when I decapped it. I might be able to match up enough bits to confirm that they are the same, or I can write up the PCB wiring and you can see if Kevin's code works.
Yup, I got it from him a few days ago and added a very preliminary MESS driver for it moments ago. PCB wiring info would be great =)